Harman-Kardon GB4 Stereo Amplifier User Manual


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39GB4 User Guide
60dB
30
5
GAIN
MIC
STE
48V
PK
LINE
-20
=
HF
HM
LM
LF
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
EQ
10
5
0
5
10
15
20
30
+16
+8
0
-10
M
1
M
2
M
3
M
4
C
1
2
L
R
3
4
PFL
L
R
MONO
L
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
AUX1
AUX2
AUX3
AUX4
AUX5
AUX6
AUX7
AUX8
BAL
PRE
PRE
PRE
PRE
POST
POST
POST
POST
PRE
PRE
PRE
PRE
R
L
0
MUTE
STE1
STE1
60dB
30
5
GAIN
MIC
STE
48V
PK
LINE
-20
=
HF
HM
LM
LF
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
EQ
10
5
0
5
10
15
20
30
+16
+8
0
-10
M
1
M
2
M
3
M
4
C
1
2
L
R
3
4
PFL
L
R
MONO
L
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
AUX1
AUX2
AUX3
AUX4
AUX5
AUX6
AUX7
AUX8
BAL
PRE
PRE
PRE
PRE
POST
POST
POST
POST
PRE
PRE
PRE
PRE
R
L
0
MUTE
STE2
STE2
(AUX1) (AUX2) (AUX3) (AUX4)
GB
4
100
9
8
7
6
5
4
3
1
18
15
12
9
6
3
3
6
10
15
20
0
+
+
+
+
+
+
-
-
-
-
-
18
15
12
9
6
3
3
6
10
15
20
0
+
+
+
+
+
+
-
-
-
-
-
18
15
12
9
6
3
3
6
10
15
20
0
+
+
+
+
+
+
-
-
-
-
-
18
15
12
9
6
3
3
6
10
15
20
0
+
+
+
+
+
+
-
-
-
-
-
18
15
12
9
6
3
3
6
10
15
20
0
+
+
+
+
+
+
-
-
-
-
-
18
15
12
9
6
3
3
6
10
15
20
0
+
+
+
+
+
+
-
-
-
-
-
18
15
12
9
6
3
3
6
10
15
20
0
+
+
+
+
+
+
-
-
-
-
-
(PFL / AFL)
RIGHTLEFT
CENTRE
RIGHTLEFTGRP4GRP3GRP2
GRP1
MTX MTX MTX MTX
MTX MTX MTX MTX
MTX MTX MTX MTX
3 333
2 222
1 111
MTX MTX MTX MTX
4 444
MTXMTXMTX
MTXMTXMTX
MTXMTXMTX
333
222
111
MTXMTXMTX
444
AFL AFL AFL AFL
PRE PRE PRE
AFL
AFL
AFL
GRP/AUX SWAP GRP/AUX SWAP GRP/AUX SWAP GRP/AUX SWAP
CCCC
AFL
AFL
AFL
AFL
AFL
AFL
AFL ON
AFL
AFL
MTX4 MASTERMTX3 MASTERMTX2 MASTERMTX1 MASTER
AUX5 AUX6 AUX7 AUX8
6
0
+
6
0
+
6
0
+
RRRRRRRRLLLLLLLL
00000000
RL
0
RL
0
RL
0
RL
0
100
9
8
7
6
5
4
3
1
100
9
8
7
6
5
4
3
1
12
-
3
5
7
4
6
8
-
-
-
12
-
34
-
LR
-
LR
-
TALKBACKREC/ALT
OUTPUT
LEVEL
LEVEL
C
MNO
GRPS
AUX
AUX
LIMIT
(+6)
AUX
AUX
+
LR
-
LR
-
LR
-
LR
-
LR
-
GRP PAN GRP PAN GRP PAN GRP PAN
LIMITER
17V
48V
+
-
MUTES
M1
M2
M3
M4
2 TRK
TO MIX
PFL / AFL
MNO
2 TRK LEVEL
MONITORING
C/ROOM
H/PHONES
2TK
C
L R TO CENTRE
-
(AUX1) (AUX2) (AUX3) (AUX4)
(GRP1) (GRP2) (GRP3) (GRP4)
RETURN 1
RETURN 2
STEREO
STEREO
MONITOR
SOURCE
ON ON ON ON
OFF OFF OFF OFF
GRP1 GRP2
GRP3
GRP4
AUX1 AUX2 AUX3 AUX4
LAMP
10
0
+
10
0
+
10
0
+
10
0
+
PRE
10
0
+
10
0
+
10
0
+
10
0
+
10
0
+
10
0
+
10
0
+
10
0
+
10
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
10
5
0
5
10
15
20
30
10
5
0
5
10
15
20
30
10
5
0
5
10
15
20
30
10
5
0
5
10
15
20
30
10
5
0
5
10
15
20
30
10
5
0
5
10
15
20
30
10
5
0
5
10
15
20
30
PUSH
1234
LEFT
RIGHT
CENTRE
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